  <tr class="concurso_venta">
    <% fields_for_associated :concurso, concurso_venta do |v|%>
      <td><%= v.collection_select(:marca_id, @marcas, :id, :nombre, {:include_blank => true}, :index => nil) %></td>
      <td><%= v.text_field(:puntos_copa, :index => nil) %></td>
      <td><%= delete_link_for(concurso_venta, "Quitar", v) %></td>    
    <% end %>
  </tr>
